SHARE-BASED COMPENSATION PLANS - Performance Restricted Stock Units Narrative (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total share-based compensation expense	$ 137.6	$ 197.8	$ 28.4
Performance Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	1.2
Total share-based compensation expense	$ 1.5
Total intrinsic value of restricted shares vested and settled	$ 0.0
Performance Restricted Stock Units | Omnibus Long-Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	1.2